How do I configure default summary stat settings for guest users?

The summary stats now offer a lot of options, and users can save a default configuration that will be used everytime they log in. However, for all guest users, these default settings are the same, and they cannot save their own configuration.

This can be overcome by users to a degree, however, by adding a Stats Viewer user to their account - they can set up a default stats summary configuration for that user as they see fit, and then make the username and password for that Stats Viewer user public - so guest users can login as a Stats Viewer. The login can be embedded in links aswell as follows: